Objects in the image:
category: person
category: person
category: person
category: person
category: person
category: person
category: backpack
category: person
category: person
category: person
category: surfboard
category: person
category: person
category: person
category: person

Guessing-game dialogue about one of the objects:
q: is a person?
a: Yes
q: is a spectator?
a: Yes
q: on the left half?
a: No
q: from right end the 1st person?
a: No
q: Is it the second one?
a: No
q: 3 rd one with bare body?
a: No
q: 4 the one with blue tops?
a: No
q: is he wearing a hat or cap?
a: No
q: one with brown tshirt?
a: No
q: the grey tshirt?
a: Yes